If “Inferno” debuts to the current predictions, it will earn roughly half of what its 2009 predecessor, “Angels & Demons,” made when it debuted to $46.2 million — and went on to earn $133.4 million domestically.

Fifty percent diminishing returns is something of a trend in the Dan Brown book-based series as “Angels & Demons” opened to roughly half of what the original “The Da Vinci Code” made on its debut. The 2006 film opened to $77 million and went on to earn $217.5 million domestically.

Sony’s Columbia Pictures and Imagine Entertainment likely picked up on the trend as the spend on the “Inferno” production was $75 million (not counting marketing costs) — which is roughly half of the budget allotted to the two previous films in the series.

Domestic results are a bit beside the point as the Robert Langdon movies have consistently made more than 70 percent of their global grosses abroad. “The Da Vinci Code” made $540.7 million overseas, for example.

“Inferno” opened first overseas and will cross the $100 million mark internationally within the next 24 hours, TheWrap has learned, which sets the stage for further domination in markets abroad.

Directed by Ron Howard, who helmed the past two films in the series, “Inferno” revolves around Langdon’s desperate race to head off a global pandemic by using Dante’s “The Divine Comedy” to unravel a mystery.

The film will open in more than 3,550 theaters (377 of those being IMAX and 400 are premium large format screens). The $25 million estimate for “Inferno” is not set in stone as factors like the World Series and the fact that its Halloween weekend could affect turnout.

The Evolution of Tom Hanks' Hair: From 'Bosom Buddies' to 'Da Vinci Code'

Tom Hanks' wavy mullet was something of an obsession for the actor as he embarked on the first installment in the "Da Vinci Code" series. In honor of the film's 10-year anniversary, take a look back at the Oscar winner's coif chronology.

Columbia Pictures

When Hanks wasn't showing off his real brown locks on the early 1980s sitcom "Bosom Buddies," he donned a woman's wig during his cross-dressing scenes with co-star Peter Scolari. (The ABC show revolved around two bachelors who dress as women in order to secure an affordable apartment.)

ABC/Paramount Television

Hanks' hair is his thing, dating back to his breakout film role in the hit 1984 romantic comedy "Splash." Just look at how Daryl Hannah (who played the mermaid Madison) is combing her fingers through it!

Disney

Apparently studio execs were banking on Hanks' curly mop: This publicity photo for the raunchy 1984 comedy "Bachelor Party" has another woman running her fingers through his locks.

Hanks' hair was slicked back in some scenes for the 1990 dramatic comedy "The Bonfire of the Vanities."

Warner Bros.

Hanks played a lawyer afflicted with HIV-AIDS in the 1993 drama "Philadelphia," for which he won his first Academy Award. And yes, his hair reflected such as he depicted various stages of his character's illness in the film.

TriStar Pictures

Hanks wore his hair closely cropped during most of 1994's "Forrest Gump," which won six Oscars, including the actor's second win in the Best Actor category.

Paramount Pictures

But he also wore a long-haired look, complete with impenetrable beard, during the the film's famous running sequence set in the 1970s.

Paramount Pictures

Who can forget Hanks' blonde permed look in the 2000 drama "Castaway" (in which he re-teamed with Zemeckis)?

20th Century Fox

His hair was styled quite fancifully in the 2004 Coen Brothers comedy "The Ladykillers."

Disney

To achieve the perfect coiffure for "The Da Vinci Code," Hanks thought really hard about it: "[I wanted it] fuller in the back and falling down across my forehead," he shared in a 2006 interview. "But the truth is my hair cannot be long and flowing -- genetically, it doesn't do that. It's a bush... We talked about a wig, but that ends up taking a huge amount of time. So I went to these guys who know about hair chemistry and found a way." Science.

Columbia Pictures

And the winner for most styles worn by Hanks in a single movie goes to: 2012's "Cloud Atlas."

Warner Bros.

When Hanks reprised his "Da Vinci" role as Robert Langdon for a third time in "Inferno" (in theaters Oct. 28), he ditched the party in the back, opting for a smoothed-out, shorter version. Good choice.

Columbia Pictures

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Celebrate the 10th anniversary of “The Da Vinci Code” with a stroll down memory mane

Tom Hanks' wavy mullet was something of an obsession for the actor as he embarked on the first installment in the "Da Vinci Code" series. In honor of the film's 10-year anniversary, take a look back at the Oscar winner's coif chronology.